Throttle lever



Dec. 27, 1949' B. SMITH ET AL THROTTLE LEVER 2 Sheets-Sheet 1 Filed March 2, 1945 INVENTORS BE/H' .sM/n/ TM bf L m Dec. 27, 1949 B. SMITH ET AL 2,492,715

THROTTLE LEVER Filed March 2, 1945 2 Sheets-Sheet 2 F//?67' THROTTLE SECOND Til/P0 T725 Patented Dec. 27, 949

THROTTLE LEVER a Bert Smith, Teaneck, and Charles Ringel, Hawthorne, N. J., assignors to American Throttle Company, Inc., New York, N. Y.

Application March 2, 1945, serial No. 580,568

motive cab. The usual throttle rods and linkages are provided for each of the throttles and arranged to be coupled selectively to the throttle operating lever in the cab. The invention will be best understood upon reference to the accompanying detailed description of an illustrative embodiment thereof when read in conjunction with the accompanying drawings in which:

Figure l is a diagrammatic elevational view, partly broken away, of a locomotive equipped with mechanism for actuating plural throttles in accordance with the present invention;

Figure 2 is an elevational View showing the throttle lever provided in the locomotive cab in conjunction with the mechanism for selectively coupling it with the individual operating rods for the two throttles;

Figure 3 is a sectional view on the line 3-3 in Figure 2.

Figure 4 is a sectional view on the line 44 in Figure 3 and shows on an enlarged scale the device for coupling the throttle lever with either of the throttle operating rods and Figure 5 is a sectional view on the line 5-5 of Figure 2.

The locomotive indicated in Figure lis provided with a throttle ID for controlling the supply of steam to the locomotive engine I I when it is in forward motion and a throttle I2 for use in reverse motion. Associated with each of these throttles are the usual linkages and operating rods I3, I4, respectively, extending rearwardly into the locomotive cab to be selectively operated by a single throttle lever I5. The operating rods I3, I4 are mounted parallel with each other with their rear ends in closely contiguous relation in a guide-housing I6 and each is formed with a similarly located notch or slot I'I, extending inwardly from their abutting edges for selective reception of a stud I8 supported between the bifurcated ends of a link which is pivotally connected at its rearward end with the throttle lever I5. The sides of housing I6 are slotted at I9 to permit the reciprocation of stud I8. The stud I8 extends between the fingers 2I of a selecting lever 22 pivotally mounted at 23 so that when the latter is 2 Claims. (Cl. 74-471) swung to the forward or reverse position indicated by the letters R and F on the indicator 24 in Fig. 2 the stud I8 will be either raised or lowered, respectively, into the slot I! for coupling the related rod I3 or I4 respectively for operation by the throttle lever I5. As appears in Fig. 3, the rods I3, I4 are slotted at 29 to permit their reciprocation inasmuch as lever 22 extends through them. j

Each of the rods I3 and I4 is formed close to the selecting lever 22 with rack teeth 25 with which spring pressed detents 26 engage to prevent reciprocation of either rod until release of the related detent. To release the detents 26 sliding wedges 21 are provided each connected by an individual link 28 with the selecting lever 22 so that operation of the latter to selectively couple either rod I3 or I4 with the throttle lever l5 also effects release of its detent 26 by raising it from the rack 25 as the wedge 21 is moved forwardly. To prevent improper movement of the selecting lever 22 during operation of either throttle rod I3 or I4, the two rods are formed with complementary portions of a U-shaped slot 32 extending longitudinally of the rods and the selecting lever 22 is provided with a stud 33 positioned midway in the bight portion of the U-slot 32 and adapted on operation of the selecting lever 22 to be raised or lowered therewith into alignment with the leg portion or 3I of the slot so that once either rod I3 or I4 has been moved to displace the bight portions 35 or 36 of the slot from alinement with the stud 33 the latter is held in the leg 30 or 3I so as to prevent pivotal movement of the selecting lever 22. This maintains the fingers 2| of selecting lever 22 aligned to receive the stud I8.

It is believed that the operation of the throttle operating mechanism should be apparent from the above description but the following brief resume is given of operation for opening the throttle II] when the locomotive is to move forwardly. Upon clockwise movement of selecting lever 22 to the F or forward position the stud I8 moves into the notch I'I thereby coupling rod I3 with the throttle lever I5. At the same time the selecting lever 22 acts through the link 28 to force the wedge 21 forwardly thereby releasing the detent 26 so that the rod I3 may be drawn rearwardly by the link 20 and stud I8 when the engineer pulls the throttle lever I5 rearwardly. The forward movement of the selecting lever 22 also positioned its stud 33 at the upper end of the bight portion 35 of the U-slot 32 thereby positioning the stud in alinement with the leg portion 30 of the slot that is in the rod l3 so that rearward motion of the latter by moving the bight portion 35 out of alinement with the stud 33 engages it and thereby locks the selecting lever 22 against move- 5 ment during operation of the throttle lever 15.

Although a detailed embodiment of the invention-hasbeen =shown in athe drawingstand described .in detail above, it to be 'iinderstood that many changes and variations may be made 10 without departing from the invention and i therefore it is desired and intended to include all such changes and variations within the' s'cope of the appended claims. 5.,

What we claim is: 1. Operating mechanism for a pair of valves; or the like comprising individual actuating rods contiguously supported for reciprocation parallel to each other and formed with almedsslotsy a single operating lever-having a stud disposed ,partly in the slotrofleach rod a selectingtlever and means on said, -selecti-ng lever ..for \,moving said stud completely into} the slot t0f-. one oft-said rods. to couple then-latter "to .said ;-operating lever, means for lockingflnthei.nonqselected I actuating 25 red against movement to-;prevent 2its-operation comprising individual; releasahlev .detents -engaging-each actuating rod; and means :operable by said selecting lever for releasing the detent associated with the actuating rod tselected rfor o operation by:saidrlevere tiseither Tod-i to lock said se1ecting,. :-lever against movement on operation of the related rod by trtsaid throttle lever.

BERT SMITH. CHARLES RINGEL.

REFERENCES CITED The following'fferences are of record in the fileoofd this. patent:

7: UNITED STATES PATENTS 

